The solar pannel has been on for about 7 years. When I leave the boat, the batteries are always fully charged by the battery charger, then the pannel and wind genny keep nibbling away slowly at that portion of charge you can never seem to replace. Im not talking of overcharging, but topping up. In winter, I might get 20ah plus a week added to the running total of the battery monitor. But it

always felt as though the batteries were always needing a forced heavey charge from a source that only auto electricians might have in their workshops. The Tudor cells, I could keep their S.G's up but not the Varta.